Entegris, Inc. engages in the development, manufacture, and supply of specialty materials for the microelectronics industry. The company is headquartered in Billerica, Massachusetts and currently employs 8,200 full-time employees. The company went IPO on 2000-07-11. The firm's segments include Materials Solutions (MS), Microcontamination Control (MC) and Advanced Materials Handling (AMH). The MS segment provides advanced consumable materials, such as chemical mechanical planarization (CMP) slurries and pads, deposition materials, process chemistries and gases, formulated cleans, etchants and other specialty materials. The MC segment is engaged in filtering and purifying critical liquid chemistries and gases used in semiconductor manufacturing processes and other high-tech industries. The AMH segment protects critical materials during manufacturing, transportation, and storage; including products that monitor, protect, transport and deliver critical liquid chemistries, wafers, and other substrates for a broad set of applications in the semiconductor, life sciences and other high-tech industries.